package com.zoo.test;

import java.io.IOException;
import java.util.concurrent.CountDownLatch;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.zookeeper.WatchedEvent;
import org.apache.zookeeper.Watcher;
import org.apache.zookeeper.Watcher.Event.KeeperState;
import org.apache.zookeeper.ZooKeeper;

public abstract class AbstractZooKeeper implements Watcher {
	private static Log log = LogFactory.getLog(AbstractZooKeeper.class.getName());
	
	//缓存时间 
	private static final int SESSION_TIME = 2000;
	protected ZooKeeper zooKeeper;
	protected CountDownLatch countDownLatch=new CountDownLatch(1);
	
	public void connect(String hosts) throws IOException, InterruptedException{
		zooKeeper = new ZooKeeper(hosts,SESSION_TIME,this);
		countDownLatch.await();
	}
	
	@Override
	public void process(WatchedEvent event) {
		// TODO Auto-generated method stub
		if(event.getState()==KeeperState.SyncConnected){
			countDownLatch.countDown();
		}
	}
	
	public void close() throws InterruptedException{
		zooKeeper.close();
	}
}
